Catalog Index By LC Categories
- R - Medicine (General)
- RA - Public aspects of medicine
- RB - Pathology
- RC - Internal medicine
- RD - Surgery
- RE - Ophthalmology
- RF - Otorhinolaryngology
- RG - Gynecology and Obstetrics
- RJ - Pediatrics
- RK - Dentistry
- RL - Dermatology
- RM - Therapeutics. Pharmacology
- RS - Pharmacy and materia medica
- RT - Nursing
- RV - Botanic, Thomsonian, and Eclectic medicine
- RX - Homeopathy
- RZ - Other systems of medicine